CNN300

1. Definition Set the waiting time and execute the specified hardware operation after the waiting time is reached. The most basic function of a timer is timing, such as sending serial port data a...[Details]

This example is based on S3C2440, WINCE5.0 1. Interrupts are divided into two categories: internal interrupts and external interrupts.           External interrupt: An interrupt caused by an extern...[Details]

1. Introduction to dot matrix LED 1.1. What is a dot matrix LED? LED dot matrix screens are composed of LEDs (light emitting diodes) and use the on and off of lamp beads to display text, pictures, an...[Details]

introduction I have been involved in embedded software development for nearly five years, and I have almost always used ARM Cortex M core series microcontrollers. During these five years, thanks to t...[Details]

    With the development of the automobile industry, in-vehicle navigation equipment has been used more and more. Now mainstream in-vehicle navigation equipment is integrated with DVD function, which...[Details]

1 Overall design The livestock breeding intelligent disinfection robot control system consists of three parts: robot intelligent control module, monitoring module, and wireless network comm...[Details]

With the development of microelectronics technology, electrical control methods have become more flexible and diverse, and the control accuracy has become higher and higher. In intelligent control,...[Details]

1. System Overview The modules used in the system include AT89C51 microcontroller + LCD1602 display screen + photoresistor module + ADC0832 + small light. This design uses 51 microcontroller as the c...[Details]

0. Implement uwTick function similar to STM32 through TIM4 An interrupt is generated through TIM4 timing, and uwTick++ is executed every millisecond. 1. Set TIM4 frequency division and automatic re...[Details]

1. Touch screen calibration principle The bit of ADCDATA parsed by the touch screen before represents the conversion result of the coordinate ADC, so these results are converted through volta...[Details]

As we all know, microcontrollers cannot directly read current. Generally, the current value needs to be converted into a voltage value to read. At this time you should think of the great Ohm's law, w...[Details]

I saw the following code when looking at the lowlevel_init.S file of U-BOOT: lowlevel_init: ldr r0, =SMRDATA ldr r1, _TEXT_BASE sub r0, r0, r1 ldr r1, =BWSCON add r2, r0, #13*4 0: ldr r3, , #4 str r3...[Details]

1. Big-endian format: the high byte of the data is stored at a low address, and the low byte is stored at a high address;       Little-endian format: The low byte of the data is stored at a low addre...[Details]

#include #define uchar unsigned char #define uint   unsigned int   void Delayus(uint US);     void Delayms(uint MS);     void display(uchar FirstBit,uchar Num);    float TempData ; u...[Details]

When I was working on a small device recently, I needed to send the data collected by AD to the host computer through the serial port. Since it also had to be displayed on the lower computer, it was ...[Details]